High-speed relay



May 7,1 1929. H. J. J. M.- DE R. DE BELLEslzE: 1,7114926 HIGH SPEED RELAY Filed Aug'. 17. 1922 vwwe/14h02'. J.J.M.'DE BELLESCIZE Patented May i7, 1329.

UNITED STATES PATENT orifice.I

HENRI JEAN JOSEPH MARIE DE REGNAULD DE IBE'LLIEISGIIQZE,y OF TOULQN, FRANCE.

' HIGH-SPEED vRELAY.

Application filed August 17, 1922, Serial No. 582,539, and in France August 22, 19'21.

The present invention relates to relays, such'as telegraph relays, having a winding that is traversed at one time by operating currents, and at another by normal currents of opposed direction to the operating currents. An armature is provided between two buffers or contacts, and is attracted by theoperating current against the active contact and bythe normal current againstfthe passive Contact.

It is the object of this invention to increase the speed of this relay and to render it less sensitive to disturbances which are accidentally superposed on the normal currents.

Fig. 1 shows a relay operating in accord, ance with the Baudot principle which is modified in accordance with the present invention. v

Fig. 2 is a curve showing the operation of -a relay without an auxiliary winding.l

Fig. 3 is a curve showing the operation of a relay with an auxiliary winding yaccording .to my invention.

The relay is provided with the following usual elements: Two soft iron cores A B are energized by the main winding C C traversed in opposite directions by the normal and operating currents. An'opcrating cur rent causes, for example, a positive magnetization of the free end of core A, and a negative magnetization at the end B, and vice versa for a normal current.

An armature DD is provided and is, e. g., positively polarized by a permanent magnet not shown in the drawing. The armature is pivoted on a shaft E and its movement is limited by the contacts G F. As above stated, an operating current attracts the armature against contact G.

The arrangement is completed by two sources S1' S2 from which line LL is supplied with current the direction of which dej.

pends on the position of the armature.

This normal relay may be arranged in any suitable manner and carries an auxiliary winding HH which, depending on whether the contact G or F is engaged, is supplied with current fromsource Sl or S2. The direction of this winding is such that the additional magnetization always tends to maintain the armature on the contact on which it is resting. Due to this arrangement, 'before an operating or normal current can move the armature, it must produce an attractive force that is slightly superior to the force of the additional magnetization. The latter is adjusted to a suitable of a resistance R.

The operation is as follows:

Let us `assume rst that there is no auxiliary winding. Let the armature be onpassive contact F and let an operating current be sent out. The attraction of this current is represented in function of time by the y curve OMN. At time t1, the value of this attraction is OP which is sufficient for balancing the passive resistances (friction, attraction' o the permanent magnetism) whereby the armature is moved. At time t2,-

e lightest armature is of relatively great'` importance. For this reason, attractions must be developed of an amplitude OU which may be ten times higher than the amplitude OP that is absolutely necessary for obtaining the slow movement. Due to this arran ement, the armature will respond to atmosp cries to the extent that the intensity of these exceeds the yalue of the si naling currents.

tains an amplitude UQ (UO+ OQ, OQ being OP), whereby the armature momentarily leaves the active contact. As a result of this, the disturbance is transmitted into the line controlled by the relay.

This situation is fortunately modiied by the auxiliary winding.

Applying the above described operations to Fig. 3, we lind that the armature engages the passive contactand is held against this contact by the auxiliary force OV. The main winding is now traversed by an operating current.

At time t', the two opposing forces are balanced and the armature leaves the pas sive contact. The armature will enga e the active contact at time t', for whic the amount of movement represented by the shaded portion is suflcient. The auxiliary attraction will be first annulled at time t'1,

value by means the In Fig. 2 it is clear y shown that the atmospheric accidentally atroo then reversed at time t2, and attains the amplitude W opposed tothe preceding.

The reverse movements occur at t3 and '4.

Y The armature does not respond to disturbances such asv JJJ theamplitude of IWhich does not attain a value equal to the sum of the signaling current and the auxiliary current. This sum may almost be equal to double the signaling current.

effect:

It produces a certain' displacement (15',-n

t1) in the movements of the armature. This displacement has no importance.

It increases the speed of the armature. As a matter of fact, the mean amplitude of the shaded part being greater in Fig 3, the same lamount of movement is obtained during a shortertime.

It maintains the armature in engagement with the contacts and prevents therefore the v rebounding that might result from the speed.

And mainly, it renders the relay unresponsive to even strong disturbing currents.

I-Iaving described my invention,` what I claim is:

1. In a relay having an armature, the combination of a single operating Winding, an auxiliary Winding adapted` to maintain the armature against the contact on which it rests and means for reversing the direction of.y current flow in thevauxiliary Winding upon reversal of the armature position. 2. In a relay having an armature, a single main Winding for moving the armature, means for resisting the influence of the main Winding on the armature during the early part of a signal impulse, and means for eliminating the effect of said first-mentioned means as the armature moves from its initial position.

3. In a relay having an armature, a single main winding for moving the armature, an auxiliary Winding for resisting the influence of the main Winding on the armature during the early part of a signal impulse, means for eliminating the ei'ect of said auxiliary Winding as the armature moves from its initial position, and means for regulating the current in the auxiliary Winding.

the armature rests on either contact, means The auxiliary current has the following for graduating the current throughthe auxiliary Winding and means for reversing the direction of current flow in the auxiliary Winding upon reversal, of the armature position.

6. In a neutral relay having an armature, fieldmagnets having single operating Windiing and an auxiliary Winding, said auxiliary Winding forming part of an unbroken coni ducting circuit when the armature rests on either contact, and means for reversing the direction of current flow in the auxiliary Winding upon reversal of the armature position. e

7 In a relay having an armature and field magnets, means for producing magnetization ofthe field magnets, additional means for producing a secondary magnetization of the field magnets, said secondary magnetif Zation operating at first to maintain the armature in its initial position upon reversal of the magnetization of the field magnets by said rst means, but ceasing during movement of the armature and again operating to attract the armature when it reaches final contacting position. j

8. In a relay having an armature, an operating Winding, an auxiliary Winding forming part of an unbroken conducting circuit in either of the contact positions of the armature, means to graduate the current -flovv in said auxiliary Winding, said graduating means consisting of a variable resistance interposed between the auxiliary field Winding and the armature, means for reversing the direction of current flowing in the auxiliary Winding upon the reversal of the armature position, and means for. maintaining the armature in its final contacting position.

9. In a relay having an armature, field magnets having an operating Winding and an auxiliary Winding, said auxiliary Winding forming part of an unbroken conducting circuit in either of the contact positions of the armature, means for reversing the direction of current flowing in the auxiliary Winding upon the reversal of the armature position, and means for-maintaining the armature in its final contacting position.

10. In a relay having an armature, the combination With field magnets, of a main Winding traversed at one time by operating currents and at another b normal currents of opposed direction to tlle. operating currentsfor moving the armature Ifrom one contact to another, a mainline having one conductor connected to the armature and another conductor` connected to both contacts, and an auxiliary Winding associated with said field magnets connected in parallel with said main line.

HENRI JEAN JSl-IPH MARIE de REGNAULD' da BELLESCIZE. 

